Working-class father John Crowley is finally on the fast track to corporate success when his two young children, Megan and Patrick, are diagnosed with Pompe disease - a condition that prevents the body from breaking down sugar. With the support of his wife, Aileen, John ditches his career and teams with unconventional specialist Dr. Robert Stonehill to found a bio-tech company and develop a cure in time to save the lives of Megan and Patrick. As Dr. Stonehill works tirelessly to prove the theories that made him the black sheep of the medical community, a powerful bond is forged between the two unlikely allies.